ff had new feature sidebar Vertical Tabs,
please add support toggle to hide/show sidebar Vertical Tabs......
this is very crucial and important,
cz alot of incoming ff popular feature depend on it
eg. "split view" this integration will be increase your extension popularity and every one depend on your extension cz till now no one extension integrated with it,
this extension wiill be the first and only one!!!

Sharing my experience with other people, hope it could help
I had to create `chrome` folder and `userChrome.css` file in my profile folder. After that, I added a snippet from the addon homepage. After restarting the browser, I still had native tabs displayed. There were no issues with configuration, I simply had to click the new icon on the extension bar to hide native tabs :D

works well! don't need anything more. Looking for something like this for a long time so just created an account to write review. Haha.

Can we have a better icon that matches current line icons style of Firefox and be adaptive to the theme color? Or provide an option to customize the icon and color. Thank you for your awesome addon and css code. They work perfectly.

Message for the dev: could you create an extension to autohide the sidebar when on hover? There are already CSS based tricks that allow this, but they miss a button to toggle this effect on/off on demand.

Thank you ever so much for making this into an add-on. I wasted an hour trying to recreate it after a system wipe :DDD

Need help. It does not work for me. Followed the instructions to the letter. The only difference for me is that I already have userchrome.css up because I was using since before, which only has one change in it that for sure does not conflilct with this add-on.

After following the instructions and then restarting Firefox the horizontal bar up top is still visible even while pressing the Toggle Native Tab Bar icon on and off.

Ladies and gentleman.. We got them.
It works but u do have to follow the instructions.
The instructions were easy to follow too.
I just started using Sidebery too.

It works! Required a little setup, but instructions were clear. Awesome to be able to toggle the tab bar on and off with the click of a button. Great work, Dev.

One thing I had to figure out was when saving a .css file with TextEdit on Mac, you first need to go to "Format" and select "Make Plain Text". Otherwise, it will force you to save with a .rtf extension. It will still ask whether to save it as .txt, so make sure to confirm .css after that.

Works perfectly, cannot be better.